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138 lines
3.9 KiB
138 lines
3.9 KiB
/*
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* Copyright (C) 2007-2009 Sourcefire, Inc.
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*
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* Authors: Tomasz Kojm, Török Edvin
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*/
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#if HAVE_CONFIG_H
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#include "clamav-config.h"
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#endif
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#include <stdio.h>
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#include <string.h>
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#include <sys/types.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#ifndef _WIN32
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#endif
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#include <errno.h>
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#include "libclamav/clamav.h"
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#include "shared/optparser.h"
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#include "shared/output.h"
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#include "shared/misc.h"
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#include "others.h"
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#include "server.h"
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#include "tcpserver.h"
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int tcpserver(int **lsockets, unsigned int *nlsockets, char *ipaddr, const struct optstruct *opts)
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{
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struct addrinfo hints, *info, *p;
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int *sockets;
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int sockfd, backlog;
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int *t;
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char *estr, port[10];
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int yes = 1;
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int res;
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unsigned int i=0;
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sockets = *lsockets;
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snprintf(port, sizeof(port), "%lld", optget(opts, "TCPSocket")->numarg);
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memset(&hints, 0x00, sizeof(struct addrinfo));
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hints.ai_family = AF_UNSPEC;
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hints.ai_socktype = SOCK_STREAM;
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hints.ai_flags = AI_PASSIVE;
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#if C_LINUX
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if (!(ipaddr)) {
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/*
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* By default, getaddrinfo() will return 0.0.0.0 if NULL is passed in as the first parameter.
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* Binding to 0.0.0.0 will prevent us from also binding IPv6 ::0 (errno = EADDRINUSE). However,
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* if we bind to ::0 (or shorthand, ::), then Linux will bind to both IPv4 and IPv6.
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*/
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ipaddr = "::";
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}
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#endif
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if ((res = getaddrinfo(ipaddr, port, &hints, &info))) {
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logg("!TCP: getaddrinfo: %s\n", gai_strerror(res));
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return -1;
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}
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for (p = info; p != NULL; p = p->ai_next, i++) {
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t = realloc(sockets, sizeof(int) * (*nlsockets + 1));
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if (!(t)) {
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for (i=0; i < *nlsockets; i++)
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close(sockets[i]);
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return -1;
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}
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sockets = t;
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if ((sockfd = socket(p->ai_family, p->ai_socktype, p->ai_protocol)) == -1) {
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estr = strerror(errno);
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logg("!TCP: socket() error: %s\n", estr);
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continue;
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}
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if(setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, (void *) &yes, sizeof(yes)) == -1) {
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logg("!TCP: setsocktopt(SO_REUSEADDR) error: %s\n", strerror(errno));
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}
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if(bind(sockfd, p->ai_addr, p->ai_addrlen) == -1) {
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estr = strerror(errno);
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if (ipaddr || i == 0)
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logg("!TCP: bind() error when trying to listen on [%s]:%s: %s\n", ipaddr, port, estr);
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closesocket(sockfd);
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continue;
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} else {
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if((ipaddr))
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logg("#TCP: Bound to address %s on port %u\n", ipaddr, (unsigned int) optget(opts, "TCPSocket")->numarg);
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else
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logg("#TCP: Bound to port %u\n", (unsigned int) optget(opts, "TCPSocket")->numarg);
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}
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backlog = optget(opts, "MaxConnectionQueueLength")->numarg;
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logg("#TCP: Setting connection queue length to %d\n", backlog);
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if(listen(sockfd, backlog) == -1) {
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estr = strerror(errno);
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logg("!TCP: listen() error: %s\n", estr);
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closesocket(sockfd);
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continue;
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}
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sockets[*nlsockets] = sockfd;
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(*nlsockets)++;
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}
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freeaddrinfo(info);
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*lsockets = sockets;
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return 0;
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}
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